DE3004646A1 - Tennis racquet stringing system - uses at least one string in pre-set alternating sequence indicated by markings near holes of tensioning frame - Google Patents

Abstract

The tennis racquet has a tensioning frame (1) with a frame head. It has a stringing surface of string tracks which cross each other in a net shape and extend along the length and transverse to the middle axis of the racquet. The string track is made of at least one string which is led in a pre-set consecutive sequence with its direction changing between a parallel and a transverse stringing relative to the middle axis of the racquet through corresponding holes in the tensioning frame. The markings on the tensioning frame indicate the sequence of bores to be passed through during the stringing operation.

Description

Tennis racket

The invention relates to a tennis racket with a frame head exhibiting tensioning frame as well as a covering surface made of mesh-like intersecting, at least one string sections running transversely and longitudinally to the racket center axis String that is parallel in a certain stringing sequence with alternating tensioning direction or is guided transversely to the club center axis through holes in the clamping frame, and a process for its manufacture.

Tennis rackets of the aforementioned type are generally known, wherein their shape, determined by the clamping frame, varies from teardrop-shaped to circular.

The clamping frame usually ends in a racket neck which is followed by a handle.

The clamping frame itself has a rectangular or U - to double T-shaped cross-section, so that the holes penetrating the clamping frame completely or partially disappear in the clamping frame.

The covering itself is net-like, with the angle between a cross string section and a main string section is normally 900, but also can be larger or smaller.

As a rule, when stringing a new racket or the new stringing of a used racket with the pulling in of the main strings began. The reason lies in the preferred oval shape of the clamping frame the tensile stress parallel to the central axis is higher than that parallel to the minor axis.

It has been shown that it always occurs when stringing the racket again difficulties and thus delays arise because of the sequence the holes to be driven through is unclear.

This starts with pulling in the first main string section with the question of which of the opposite holes after driving through the first hole is to be used. Further such doubtful cases then arise if the bores for the cross and main strings alternate.

The inventor has set himself the goal of making a tennis racket of the above G. To develop a way in which the disadvantages mentioned do not exist, the above all, it is quick and economical to string.

This object is achieved in that markings on the clamping frame at the holes to be driven through one after the other in the stringing sequence are provided.

According to the invention, all holes for the main string cover can be used and all holes for the cross string covering with different markings are marked or the holes concerned on the one hand the central axis and / or the transverse axis of the tensioning frame for the main string covering and the relevant holes on the other hand the central axis and / or transverse axis for the Cross string covering can be provided with the same or different markings.

It is also possible to mark all main string bores the top and / or all cross string holes on the underside of the clamping frame with the same or different markings.

However, the invention also includes that the bores are only partially identical or different markings optionally on the one hand or on the other hand Have central or transverse axis and / or the top or bottom of the clamping frame, preferably that only holes are marked that at least one other hole are adjacent for a string length transverse tensioning direction.

Above all, the latter arrangement enables compliance with the correct stringing sequence without the stringers counting holes or the like. got to.

This means that the covering is carried out more precisely, faster and more cost-effectively.

The marking of at least one hole also serves this purpose on the frame head, preferably the hole closest to the central axis, which is used to pull in the first main string section.

If all holes are marked, the frame head hole should preferably be have a different marking. The holes are only partially marked, a marking with the one intended for the main string covering is sufficient Mark.

The marking can be on or in the clamping frame, on its inner and / or outer surface. The hole itself can be, for. B.

have a different colored inner surface.

As a marking z. B. a number and / or color marking or the like.

The invention also includes markings, which by insertion from sleeves, preferably equipped with different colors, into those to be labeled Holes is generated.

The marking preferably consists of at least one strip, which runs in or parallel to its corresponding tensioning direction, what the clarity the labeling improved.

Also provides a method for manufacturing a tennis racket the above Kind before that during and / or after the formation of the tenter frame the one in the stringing sequence to be passed through one after the other Drilling marks are attached.

So can already a molding tool for the tenter projections or Have indentations that produce the required markings.

After the formation of the clamping frame, for. B.

Markings can be glued or painted on.

Further advantages, features and details of the invention result can be derived from the following description of preferred exemplary embodiments and based on the perforation; this shows in FIG. 1: a tennis racket in plan view; Fig. 2: Another embodiment according to FIG. 1 with information about a stringing sequence.

Fin tennis racket S consists of an oval frame 1 with a Outer surface A and an inner surface I, which on one narrow side of the oval in a beater neck 2 passes over and a frame head on the opposite narrow side o has. A handle, not shown, sits on the neck of the racket 2.

The clamping frame 1 preferably has a U-shaped cross section 5 on and frames the covering surface F approximately parallel to the transverse axis of the clamping frame 0 string sections 3 run, those of string sections 4 to the generation of a string be crossed. The strings 3, 4 are located in holes 6 on the clamping frame 1 fixed.

The central axis of the tennis racket 5 is used. as the symmetry axis M.

Af or in the tenter frame 1 markings 8 are attached, which the identification of the threading sequence of the String sections 3, 4 home Stringing the racket S is used.

A distinction must be made between markings 8q, which are parallel to the transverse axis of the clamping frame 0 run and markings 8m, which are arranged parallel to the M axis of symmetry.

The markings 8 indicate holes 6 into which q cross strings 3 are to be introduced; the 8 m markings serve the same purpose for the main strings 4th

The clamping frame 1 ai, f preferably bears the between the transverse axis 0 and club neck 2 parts located on one side of the central axis M four markings S and on the other side five marks 8 m. On the between the frame head 9 and clamping frame transverse axis 0 lying parts of the clamping frame 1 are snwohl on the one side of the central axis M two markings 8 q, as well as on the other side two markings S m can be seen. Between jpwei1.s two markings 8 m or 8 q there is at least one hole 6 for each transverse string section 3 or 4.

In the frame head o itself there are markings on both sides of the central axis M 8r attached. They mark the beginning and the end of the main string covering on the frame head 9.

The process of stringing 7 according to Fig.? preferably starts with the introduction of the main strings away from the central axis M, as this is due to the usually oval shape of the racket S higher tensile stress get abandoned.

For better orientation, the covering area F is aligned through the central axis M and the transverse axis Q divided into sectors I - IV, which are divided by the outer side of the tenter frame A are limited. The numbering is done in the present example against the Clockwise, starting with sector I to the right of the central axis M. Should the J, longitudinal string covering Starting to the left of the central axis M, the sectors are numbered clockwise.

The stringing direction is indicated by arrows x.

As the first to be passed through with the string 7 from the outer string A of the clamping frame The hole closest to the club neck 2 in sector I is used. This opposite is another marked 8 r in the frame head 9 in sector II Bore through which the string 7 runs from the inside I of the clamping frame is, whereby the first main string section 4 is generated.

The next parallel or fan-shaped main strings 4 traverse sectors II and I by dipping string 7 from the outer surface of the tenter frame A through the central axis M further the following holes rtl in each case opposite holes, which the string 7 from the inside of the frame I drives through, is guided.

When the fifth main string section 4 is drawn in, the first Hole marked 8 m in sector 1 from the outside of the tenter frame A her happened.

This 8 m marker indicates that the next to it in sector I. Horizontal unmarked holes must be passed through with a cross string 3 and thus must / must be omitted when making the main string covering. In the following, only the 8 m marked with the marking are allowed in the T sector Holes are used.

After pulling in the seventh main string section 4 also follows in the Sector II a hole with a marking 8 which indicates that A; e between her and the next 8 m marked hole in the TT sector is used for cross stringing.

The stringing sequence is designed so that after the last with 8 m marked hole in sector II the change to the other side of the central axis M by pulling in the cross string section 7 closest to the frame head 9 across takes place through sectors II and III. The one between the two with 8 m unmarked hole in sector II from the outer surface of the tenter frame and the hole opposite it in sector IIT marked with 8 q from the Drive through the inner surface T of the clamping frame.

Now there is a turn to continue the main string covering Change of direction, sectors III and IV with a string covering to the central axis M are occupied. The unmarked between the two holes R q in sector III sneordered hole from the outer surface of the tenter frame drive through and use the main string section furthest from the central axis M. the closest hole marked 8 q between the transverse axis Q. unmarked hole drawn in.

The next parallel or fan-shaped long string sections 4 cross sectors IV resp.

III, in that the strings 7 are removed from the outer surface of the clamping frame in an alternating rhythm A through the central axis M closer to the following unmarked holes in each case opposite holes, which the string 7 from the inner side of the tensioning frame T drives through, e.-ffihrt.

The penultimate hole for the main string covering is with the second Marking 8 r marked on the frame head 9 in the TIT sector. After crossing them from the outer surface of the tenter frame A, the longitudinal string section closest to the central axis M becomes 4 is drawn in by pulling the string 7 from the inner surface of the clamping frame I that the striker's neck 2 runs through the next borehole in Sector IV.

Then the cross strings are stretched, starting with the neck of the racket 2 nearest borehole marked with 8 q in sector IV. This is in sector I an unmarked hole arranged between two holes marked with 8 m at about the same distance from the transverse axis Q opposite that of the inside of the tenter frame area 1 is passed through with side 7.

Now the .SaSte 7 is back in an alternating rhythm from the outer surface of the tenter frame A through each of the frame head 9 closer holes to each opposite Holes through which the string 7 passes through the inner side of the stretcher I, guided. All free, unmarked pipes are used in sectors 1 and II, in sector IV the four marked with 8 q one after the other and then each further Borehole and in sector III all unmarked, free boreholes.

The penultimate from the outer surface of the tenter frame to be driven through Hole is the second hole marked 8 q in Sector III.

After the last drilling in sector II, the one below the transverse axis nearest hole marked 8 m is arranged and from the inner surface of the tenter frame T is passed through, the knot K of the string 7 takes place.

L e r s e i t e

Claims (9)

P A T E N T A N S P R Ü C H E Tennis racket with a frame head exhibiting tensioning frame as well as a covering surface made of mesh-like intersecting, at least one string sections running transversely and longitudinally to the racket center axis String that is parallel in a certain stringing sequence with alternating tensioning direction or is guided transversely to the club center axis through holes in the clamping frame, thereby characterized in that on the tensioning frame (1) markings (8) on the in the stringing sequence with the string (7) one after the other to be driven through holes are provided. 2. Tennis racket according to claim 1, characterized in that each a marking (8) of a bore (h) is assigned to at least one other Hole for a string section (3, 4) transversely adjacent to the tensioning direction. 3. tennis racket according to claim 1 or 2, characterized in that that the marking (8) of a bore (6) consists of at least one strip, which runs in or parallel to the corresponding tensioning direction. 4. Tennis racket according to one of claims 1 to 3, characterized in that that the clamping frame (1) on the one hand from the club center axis (M) markings (8 q) for cross strings or cross strings (3), on the other hand markings (8 m) for having main strings or strings (4). 5. tennis racket according to at least one of claims 1 to 4, characterized characterized in that at least one marking (8r) for identification on the frame head (9) one of the club center axis (M) next to the hole (6) for a main string (4) is arranged. 6. Method of making a tennis racket with a one Frame head having tensioning frame and a covering surface made of a network crossing string sections running transversely and longitudinally to the racket center axis at least a string that has a specific stringing sequence with alternating tensioning directions guided parallel or transversely to the club center axis through holes in the clamping frame is, characterized in that during and / or after the formation of the tenter frame (1) to those to be passed through one after the other in the stringing sequence with the string (7) Holes (6) markings (8) are attached. 7. The method according to claim 6, characterized in that the bores (6) for cross strings or strings (3) and for main strings or strings (4) to be marked differently. 8. The method according to claim 6 or 7, characterized in that the Bores (6) are marked, which at least one other bore for a string section (3, 4) are adjacent to the transverse tensioning direction. 9. The method according to at least one of claims 6 to 8, characterized characterized in that at least the first with a longitudinal string section (4) to be traversed Hole (6) is marked on the frame head (9).